The bountiful creatures sequester carbon and are a vital food source for marine predators, but their future is uncertain ...

Nearly all of Antarctica’s iconic wildlife, from penguins to seals and whales, depend on krill, tiny crustaceans that make up ...

"Here we show for the first time that a small amount of penguin guano causes a sudden change in the feeding and swimming behaviors of Antarctic krill," said Dr. Nicole Hellessey, a postdoctoral ...